You can play the full version here:
I've been working on this game for a while now, so I thought I'd put up a demo to give you a small taste of what it'll be like. Please Give me feedback.
Jump: Space (Press again to double jump)
Spin Kick: Down (while in air)
Punch: Down (while on foot)
Take out gun: M or N (press again to put away)
Dark Jak: 0 on numpad (press again to become normal)
Dark Bomb: Space + Up (while dark jak + half of dark eco meter is full)